Northrop Grumman Mission Systems is looking for you to join our team as a Sr. Principal Mechanical Engineer based in Sunnyvale, CA.
The Project Engineer will support our aftermarket programs for the marine propulsion and power generation systems, working on various engineering and manufacturing processes for high-value gearing and steam turbine assemblies, machined components, and welded fabrications. These processes include precision manual assembly, welding, bonding, and heat treatment of iron-based products.
- Perform Material Requirements Planning (MRP) for all aftermarket material.
- Develop efficient process flows and sequences of operations, manage bills of materials, create detailed work instructions, process procedures, and tooling requirements.
- Create Basis of Estimates (BOEs) for manufacturing of material, repair of field service parts, tooling design, and engineering support of manufacturing.
- Create work instructions for the repair of parts and assemblies returning from the field operations.
- Develop new processes, improve existing manufacturing processes, and develop the required tooling and fixtures with an excellent team of experienced assembly mechanics, machinists, welders, and engineers.
- Perform functional analysis, timeline analysis, detail trade studies, and requirements allocation to translate customer requirements into hardware specifications.
- Support continuous improvement initiatives and implementation of new capital equipment for establishing expanded production processes.
Basic Qualifications for the Sr. Principal Mechanical Engineer:
- Bachelor's degree in a related STEM discipline (Science, Technology, Engineering, or Math) with a minimum of 8 years of relevant work experience; OR a master’s degree in a STEM discipline with 6 or more years of experience.
- Experience reading and interpreting engineering drawings.
- Experience with mechanical assembly processes.
- Experience in technical writing and presentations.
- Ability to obtain a US Government Secret Clearance.
- U.S. citizenship is required.
Preferred Qualifications:
- Experience with Marine propulsion products (Turbines, Reduction Gears, Generators, Auxiliary equipment).
- Manufacturing and/or Industrial Engineering experience.
- Ability to operate in fast-paced and multi-tasking environments.
- Experience with tool design.
- Experience with SAP applications.
#MPR
Primary Level Salary Range: $129,300.00 - $193,900.00The above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate's experience, education, skills and current market conditions.Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay. Annual bonuses are designed to reward individual contributions as well as allow employees to share in company results. Employees in Vice President or Director positions may be eligible for Long Term Incentives. In addition, Northrop Grumman provides a variety of benefits including health insurance coverage, life and disability insurance, savings plan, Company paid holidays and paid time off (PTO) for vacation and/or personal business.The application period for the job is estimated to be 20 days from the job posting date. However, this timeline may be shortened or extended depending on business needs and the availability of qualified candidates.Northrop Grumman is an Equal Opportunity Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. For our complete EEO and pay transparency statement, please visit http://www.northropgrumman.com/EEO. U.S. Citizenship is required for all positions with a government clearance and certain other restricted positions.Skills Required
- Bachelor's degree in a related STEM discipline and at least 8 years of relevant work experience, or a master's degree in a STEM discipline and at least 6 years of experience
- Experience reading and interpreting engineering drawings
- Experience with mechanical assembly processes
- Experience in technical writing and presentations
- Ability to obtain a U.S. Government Secret Clearance
- U.S. citizenship
- Experience with marine propulsion products, including turbines, reduction gears, generators, or auxiliary equipment
- Manufacturing and/or industrial engineering experience
- Ability to work in fast-paced, multitasking environments
- Experience with tool design
- Experience with SAP applications
Northrop Grumman Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Northrop Grumman and has not been reviewed or approved by Northrop Grumman.
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Healthcare Strength — Health coverage offers multiple medical plan options by region alongside dental, vision, mental‑health resources, and wellness programs. Recent materials also highlight added family‑building support, including a dedicated fertility benefit.
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Retirement Support — The 401(k) savings plan is positioned as competitive with a company match, auto‑escalation features, and access to an employee stock fund/ESPP. Official filings and benefits guides emphasize retirement as a core element of the Total Rewards package.
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Leave & Time Off Breadth — Many sites offer a 9/80 schedule, generous PTO, paid holidays, and flexible/telework options where program needs allow. Paid parental and caregiver leave are prominently featured, with recent enhancements for the delivering parent.
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We are a close-knit community of big thinkers collaborating to keep the world safe. Our passion, creativity and expertise bring next-level technology solutions to life in autonomous systems, cyber, C4ISR, strike, space, and logistics and modernization for our customers around the globe. On the Northrop Grumman team, you’ll join our pursuit of excellence immersed in a dynamic culture of innovation and respect. Your unique perspective will help achieve our shared vision for the future of global security. Every step of the way, you'll be supported by world-class training, employee resource groups and a comprehensive benefits package that enables greater health and happiness for you and your family. Worldwide and across disciplines, we’re challenging what’s possible for technology to protect people and places from undersea to outer space and into cyberspace. And we see the impact of our performance every day. We are Northrop Grumman, and we work on what matters—now, you too can make a difference. Explore opportunities in engineering, IT, manufacturing, business management, cybersecurity and more with us. Northrop Grumman is committed to hiring and retaining a diverse workforce. We are proud to be an Equal Opportunity/Affirmative Action Employer.






